Software Error FFF0?

Zippy Zapp · 09 March 2015, 02:42

Hi All,

After getting my old A2000 back up and running i have noticed twice now that it has Guru'd after being on for a while siting idle with just the Clock running nearly full screen.

I used Guru 3.0 from aminet to look up the error and it said that it was an unknown dead end error? I have also tried all the online refs but found nothing.

Software Failure

Error: FFF0 0003
Task: 0000CEFC

Specs:
Amiga 2000 R6.2
1MB RAM (chip)
2.04 ROM
No Cards installed
Booted from Original Workbench 2.1 disk.

The only thing opened was the clock program and possibly a Shell.

It was running for about 30 minutes the first time it did it. The next time I believe it was on for 1 hour+ I wasn't paying too much attention as I wasn't using it.

Anyone have a clue what could be causing this or what that error points to?

Thanks!

Hewitson · 09 March 2015, 03:06

The first thing I'd do is a RAM test.

Zippy Zapp · 09 March 2015, 05:08

The plot thickens. RAM test passed multiple passes for several minutes 10+ passes. When exiting the memtest It froze with grey screen. Now it won't boot, back to black screen. Arrrg. I guess I have more work to do on my 2000.

Also checked the voltage on PSU. 5.16v and 11.94v which seems fine...

Hewitson · 09 March 2015, 08:33

Sounds like there's a dodgy connection somewhere. Inspect all sockets for corrosion or damage and check IC's for corroded pins.

Zippy Zapp · 09 March 2015, 16:08

Yeah that is what I am thinking, too. I pushed down on the RAM chips and agnus and tried booting. I got a green screen for a few seconds then the normal sequence and finally booted and worked fine. I inspected the agnus socket and it seems fine, no corrosion or bent pins. The chip itself is NOS. Time to look underneath and see if any chips need to be reflowed. Ugh.

Zippy Zapp · 05 May 2015, 18:48

I am terrible at updating my threads but I had a chance to tinker with the 2000 again. It is now consistently booting to Green Screen. I know the agnus is good as I have 3 that are all new and have tested them in a working Amiga. This leads me to think that one or more of the ram chips or traces are bad.

I have only basic meter and tools no scope or anything like that. Is there a trick or plan to test to find which chip or trace is bad? Do you replace one at a time and hope you find the right one? I can check for continuity, thats no problem.

Feel free to tell me if I am wasting my time too.

Thanks!

Jope · 06 May 2015, 07:41

If you have the patience, you should bring up the schematics and start testing continuity for the chip ram address and data buses.

09 March 2015, 02:42	#1
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Software Error FFF0? / Green Screen Hi All, After getting my old A2000 back up and running i have noticed twice now that it has Guru'd after being on for a while siting idle with just the Clock running nearly full screen. I used Guru 3.0 from aminet to look up the error and it said that it was an unknown dead end error? I have also tried all the online refs but found nothing. Software Failure Error: FFF0 0003 Task: 0000CEFC Specs: Amiga 2000 R6.2 1MB RAM (chip) 2.04 ROM No Cards installed Booted from Original Workbench 2.1 disk. The only thing opened was the clock program and possibly a Shell. It was running for about 30 minutes the first time it did it. The next time I believe it was on for 1 hour+ I wasn't paying too much attention as I wasn't using it. Anyone have a clue what could be causing this or what that error points to? Thanks! Last edited by Zippy Zapp; 05 May 2015 at 18:42.

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09 March 2015, 03:06	#2
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,773	The first thing I'd do is a RAM test.

09 March 2015, 05:08	#3
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	The plot thickens. RAM test passed multiple passes for several minutes 10+ passes. When exiting the memtest It froze with grey screen. Now it won't boot, back to black screen. Arrrg. I guess I have more work to do on my 2000. Also checked the voltage on PSU. 5.16v and 11.94v which seems fine...

09 March 2015, 08:33	#4
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,773	Sounds like there's a dodgy connection somewhere. Inspect all sockets for corrosion or damage and check IC's for corroded pins.

09 March 2015, 16:08	#5
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	Yeah that is what I am thinking, too. I pushed down on the RAM chips and agnus and tried booting. I got a green screen for a few seconds then the normal sequence and finally booted and worked fine. I inspected the agnus socket and it seems fine, no corrosion or bent pins. The chip itself is NOS. Time to look underneath and see if any chips need to be reflowed. Ugh.

05 May 2015, 18:48	#6
Zippy Zapp Registered User Join Date: Sep 2013 Location: CA/USA Posts: 346	I am terrible at updating my threads but I had a chance to tinker with the 2000 again. It is now consistently booting to Green Screen. I know the agnus is good as I have 3 that are all new and have tested them in a working Amiga. This leads me to think that one or more of the ram chips or traces are bad. I have only basic meter and tools no scope or anything like that. Is there a trick or plan to test to find which chip or trace is bad? Do you replace one at a time and hope you find the right one? I can check for continuity, thats no problem. Feel free to tell me if I am wasting my time too. Thanks!

06 May 2015, 07:41	#7
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,876	If you have the patience, you should bring up the schematics and start testing continuity for the chip ram address and data buses.

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